TABLE II.
Results of Receiver-Operating Characteristics (ROC) Analysis for Echocardiographic Parameters That Were Significantly Different Between Patients with McConnell’s Sign with and without Pulmonary Embolism: Tricuspid Regurgitation (TR) by Vena Contracta (VC) Width, Pulmonary Artery Systolic Pressure (PASP), Right Ventricular Free Wall Global Longitudinal Strain (GLS), and Fractional Area Change (FAC). After Area Under ROC Curve (AUC) and Optimal Cutoff Values Were Obtained, Sensitivity, Specificity, and Overall Accuracy for These Optimal Cutoffs Were Calculated for the Individual Parameters (Upper Portion), as well as for Different Combinations (Lower Portion)
| AUC | Optimal Cutoff | Sensitivity | Specificity | Accuracy | |
|---|---|---|---|---|---|
| TR by VC | 0.75 | 0.5 cm | 0.79 | 0.58 | 0.72 |
| PASP | 0.73 | 65 mmHg | 0.84 | 0.50 | 0.75 |
| GLS | 0.71 | −13% | 0.82 | 0.54 | 0.73 |
| FAC | 0.69 | 20% | 0.75 | 0.58 | 0.69 |
|
| |||||
| TR + PASP | 0.71 | 0.75 | 0.72 | ||
| TR or PASP | 0.92 | 0.38 | 0.76 | ||
| TR + GLS | 0.62 | 0.79 | 0.68 | ||
| TR or GLS | 0.98 | 0.33 | 0.76 | ||
| PASP + GLS | 0.63 | 0.88 | 0.69 | ||
| PASP or GLS | 0.98 | 0.25 | 0.78 | ||
| TR + PASP + GLS | 0.53 | 0.88 | 0.63 | ||
| TR or PASP or GLS | 0.97 | 0.19 | 0.74 | ||